let li_fn = async (ctx, next) => {
    ctx.body = 'This is index.'
}

let huang_fn = async (ctx, next) => {
    ctx.body = 'This is book.'
}

let zhang_fn = async (ctx, next) => {
    ctx.body = 'This is icon.'
}

module.exports = {
    '/user/li':['get',li_fn],
    '/user/huang':['get',huang_fn],
    '/user/zhang':['get',zhang_fn]
}